Table 1.

Overview data collection methods of BNFCS2014 in children and adolescents/adults

Age group	First home visit	Between home visits	Second home visit
Children (3–9 years)	• Face-to-face questionnairea(CAPI)	• 1-day food diary + GloboDiet completion interview 1 by telephone • FFQ (paper) • Health questionnaire (paper) • Accelerometer + logbook • 1-day food diary (for completion interview 2)	• GloboDiet completion interview 2 • Anthropometric measurements
Adolescents and adults (10–64 years)	• 24-h recall 1 (GloboDiet) • Face-to-face questionnairea(CAPI) (part 1)	• FFQ (paper) • Health questionnaire (paper) • Accelerometer + logbook (adolescents)	• 24-h recall 2 (GloboDiet) • Face-to-face questionnairea(CAPI) (part 2) • Anthropometric measurements

CAPI computer-assisted personal interviewing, FFQ Food Frequency Questionnaire

^aThe face-to-face questionnaire includes questions regarding physical activity, sedentary behaviour, socio-demographic, lifestyle and health characteristics and food safety